Rotary support



" Setl, 1936. J, l, RU-SSAKOV 2,052,801

ROTARY SUPPORT Filed April 6, 1955 2 Sheets-Sheet 1 206721 27" 2x05[RILJSCZZZOU p .1935- J. 1. RUSSAKOV 2, 2,801

ROTARY SUPPORT Filed April 6, 1935 2 Sheets-Sheet 2 07 16 Y J9 62 3 i gY 66 $ZNHH l l w Patented Sept. 1, 1936 UNITED STATES PATENT OFFICEApplication April 6,

2 Claims.

This invention relates to rotary supports more particularly for thedisplay or temporary storage of foods, confections and the like.

The invention is of particular utility in con- 5 nection with a supportof the class described for use in a refrigerator for preserving foodsmore efiiciently and conveniently, and among other objects, theinvention aims to provide an improved device of this kind.

Other objects and advantages will be apparent from the followingdescription, taken together with the accompanying drawings, in whichFigure 1 is a plan view of the main part of the support with thecontainers absent, parts being shown in section for clearness ofdescription; Figure 2 is a vertical section taken on the line 22 of Fig.1, looking in the direction of the arrows, with a partial sectional Viewof one of the containers associated with the structure of Fig. 1; Figure3 is a slightly modified form showing a different interlockingrelationship between the container and the main supporting member butstill retaining the same general principle of operation; Fig. 4 is a.fragmentary plan view of an alternative bearing means; and Fig. 5 is anaxial cross-section of the form shown in Fig. 4. v

In the illustrative construction shown in the drawings, and turningfirst to Figs. 1 and 2, I have shown a circular sheet metal base IIJdished upward centrally as at II to provide a somewhat elevated pedestalto rest upon a floor, shelf or other surface I2. Centrally of theupwardly dished part II is secured a cylindrical bearing member I3, inthis instance in the form of an inverted metallic cup having aperipheral flange I4 by which it is secured as by welding to the baseIII.

Mounted on the base I is the revolvable mem ber indicated generally bythe numeral I and 40 comprising a platform-like or tray portion I6 andthe bearing portion II, the latter adapted to have a friction-minimizingbearing on the bearing portion I3 of the base. In this instance, thetray I6 is of pressed sheet metal, as will be more particularlydescribed at a later point, and is perforated centrally at I8 to havesnugly passed therethrough the bearing portion I1 which in this instanceis in the form of an inverted metallic cup having a peripheral flange I9which may be secured as by welding to the under side of the tray I B atthe margins of the perforation I8.

Thus the bearing portions I! and I3 together form a turret-like bearingmeans upstanding centrally of the base and revolvable tray and rotata-1935, Serial No. 14,997

bly connecting these parts, the bearing portions I3 and I1 havingrelative rotation, the part I3 being normally stationary and the partII, with the tray I6, revolving thereabout. The bearing portions I3 andI? have a snug telescoping relation, but at the same time providing afree rolling fit, and to reduce friction therebetween to a minimum, Ihave provided anti-friction means between the inner and outer cups. Ashere shown, for this purpose, the inner portion I3 is 10 formed with acentral axially and upwardly directed spheroidal nub on its upper outerface 2i upon which the inner upper face 22 of the outer bearing memberI'I rotatably rests. Thus the faces 2 I, 22 of the bearing members arespaced l5 apart except at the reduced area 23 provided by the apex ofthe nub 20, the weight of the tray IS with the containers thereon, beingsustained principally by the nub 20.

Desirably the base I0 and tray I6 are further 20 interconnected toprevent casual separation of these parts, while permitting theirrelative rotation as described, and for this purpose, in this instance,I have shown the inner bearing member I3 indented in its verticalcylindrical wall 24 25 to form an annular groove 25 in which matingindentations 26 on the outer member I! may be received and may moveduring the turning movement of the parts, thus preventing axialdisplacement of the parts I3 and I1, while per- 30 mitting their freerelative rotation.

The main supporting member or tray I 6, which is carried by the bearingportion II, as just described, is advantageously of substantiallygreater area than the base Ill and has circumferentially arranged aboutits periphery a plurality, in this instance five, locations for foodjars or containers, one of which is indicated at 21. Some slightinterengagement between the tray I6 and the container 21 is desirable,both to predetermine the 10- cation of each container on the tray andalso to guard against shifting of the container during rotation of thetray. For this purpose, and assuming that the containers 2! arecylindrical, which is their simplest form, I have shown the bottom ofthe container 21 upwardly and exteriorly recessed as at 28 to snuglyreceive therein the circular upwardly directed embossments 29 pressedfrom the metal of the tray I6. These embossments 29 are advantageouslycentrally perforated as at 30 to provide drainage for moisture which mayaccumulate therein and to further facilitate such drainage the surfaceof the embossments margining the perforation 30, slopes 55 downwardlythereto as clearly shown at 3| in Fig. 2.

To economize on the metal stock for the tray I6, the tray, as best shownin Fig. 1, is conveniently formed with a non-circular perimeter, as byreducing the radial area of the metal of the tray between the containers21. Also, to provide a smooth edge for the tray l6, eliminating thedanger of cutting or scratching by this outer edge, the metal at itsperiphery is desirably curled downwardly and inwardly as best shown at32 (Fig. 2), forming a finishing bead which at the same time, by beingdownwardly turned, does not interfere with the placing of the containers21 on the tray in position as indicated on the embossments 29. v

The central area of the tray lfi is'also desirably upwardly embossed asat 33in, a somewhat ornamental configuration adding to the appearanceand strength of the tray, as well as providing a recess upon the underside of the tray to which the shoulder or flange E9 of the bearingmember ll may be welded as already explained. Thus the central andcircumferential embossments and the shoulder |9are in a common planespaced upwardly from the main body of the tray I6, enhancing theappearance and strength thereof while making it economically of sheetmetal. e

As shown in the modification of Fig. 3, the perforation 30in the form ofFigs. 1 and 2, may be enlarged as shown at 50 to occupy more orsubstantially all of the internal area of the embossment 29, and thecontainer 5| may have a somewhat reduced bottom portion 52 which isreceived in the perforation 59,;the shoulder 53 between the reducedbottom 52 of thecontainer and the main part thereof providing aninterlocking engagement with the edge ofthe perforation 59 to preventcasual displacement of the container upon the sameprinciple as alreadydescribed with respect to the other views.

Turning now to'an alternative bearing means shown in Figs. 4.- and 5,the base 55 is of an inverted cup-like form, generally similar to thebase In but in this instance isdished downward.- ly as at 55 about theupstandingbearing member 5 Also as shown in, this alternative con--struction, the bearing member 5% is of machined metal to be riveted or,as here specifically shown, bolted by the nut 51 to the base 55.Telescoping over the inner bearing member 55 is the outer invertedcup-like. bearing member 58 also, 'inthis form, of machined metal 'androtatably supported on the inner bearing member 56, the principalcontact being upon the boss-like upward projection. 59 of the innermember. The inner member has the machined peripheral groove 65 near itsupper end in which is loosely received a pin-like projection 58 carried,by the outer bearing member Sa as by a set screw 52 in the radial wallof the latter. The outer bearing member in. its axial wall may.advantageously have an oil aperture 5.3 providing access for a lubricantto the meeting surf-aces of the parts, and to furtherreduce or minimizefriction therebetween the inner bearing member may have a diametricallyreduced intermediate portion 65.

In this construction shown in Figs. 4 and 5, the tray [6 is shownsecured medially of the upper and lower ends of the outer bearing member58, the outer bearing member having a reduced threaded shank 65 whichpasses downwardly through a central aperture 5i in the pressed metaltray I6, a nut 68 then clamping the margins of the aperture 61 to theshoulder 69 of the bearing member. The nut 58 also provides a supportingshoulder'ror the tray it received within the upwardly directed recessformed by the under side of the embossment 33 and in the plane of theembossment. The downwardly'dished formation 55 of the base 55 tends tocompensate for the downwardly projecting extension 66' of the bearingmember 58 and the bearing parts may be thus made smaller and morecompact while at the same time retaining the advantages of stability andease of rotation with. a minimum of friction.

So constructed and arranged, .thedevice is strong and yet simple, whileproviding a quiet and easily turned structure. In each case it will benoted that the base, and container interlock at points spaced inwardlyfrom the outer edge of the container; one desirable result being thatthe interlocking means are concealed.

Having described my invention, I claim:

1. In a rotary support structure of the class U described, a pressedsheet metal tray of a gen. erally circular configuration, said trayhaving a central embossment upwardly pressed from the main portion ofsaid tray, a plurality of other upwardly pressed embossments arrangedcircumferentially of said tray'and spaced apart from each other and fromsaid central embossment. but whereby all of said embo-ssments are in acommon plane offset upwardly of the main body portion of the tray toenhance the appearance and strength thereof, said circumferentialembossments being adapted each to be. spanned by one of a pluralityvofcontainers or the likereceived on said tray about said central embossiment and removably retained -in position on said tray by engagement eachwith one; of said circumferential embossments. 3

2. In a rotary support structureof the class described, a pressed sheetmetal tray, said tray having a central. embossment upwardly pressedfirom the main portion of saidtray and a centralperforation in saidembossment, aplurality of other upwardly pressed, embossments arrangedcircnmferentially of said tray and spacedapart from each other and fromsaidgcentral embossment but whereby all of said embcssrnents are in acommon plane offset upwardly of the'main body portion of the tray, andabearing member passing through said central perforation and hav ing ashoulder. receiving and supportingthe edges thereof whereby saidshoulderis also in the plane of said embossments and spaced above the mainbodyof the tray in the upwardly 6X? tending recess provided by=the saidcentral errbossment' and enhancing the appearance; and strength of thestructure. a :1

JACOB IFRUSSAKOV,

